List of earthquakes in 1973

Earthquakes in 1973

class=notpageimage| Approximate epicenters of the earthquakes in 1973 4.0–5.9 magnitude 6.0–6.9 magnitude 7.0–7.9 magnitude 8.0+ magnitude
Strongest magnitude	Japan off the east coast of Hokkaido (Magnitude 7.7) June 17
Deadliest	China, Sichuan Province (Magnitude 7.4) February 6, 2,199 deaths
Total fatalities	2,899
Number by magnitude
9.0+	0
8.0–8.9	0
7.0–7.9	9
6.0–6.9	57
5.0–5.9	1333
4.0–4.9	2557
←  1972 1974  →

This is a list of earthquakes in 1973. Only magnitude 6.0 or greater earthquakes appear on the list. Lower magnitude events are included if they have caused death, injury or damage. Events which occurred in remote areas will be excluded from the list as they wouldn't have generated significant media interest. All dates are listed according to UTC time. Maximum intensities are indicated on the Mercalli intensity scale and are sourced from United States Geological Survey (USGS) ShakeMap data. Both the number of large events and the death toll were substantially lower in 1973. There were 9 magnitude 7.0+ events. The largest of these was in Japan measuring 7.7. Russia and New Hebrides were active during the year with each country having 2 magnitude 7.0+ events. Nearly 3,000 deaths were reported with China being worst affected. Mexico also had a significant death toll.

Overall

By death toll

Rank	Death toll	Magnitude	Location	MMI	Depth (km)	Date
1	2,199	7.4	China, Sichuan Province	X (Extreme)	33.0	February 6
2	600	7.1	Mexico, Oaxaca	VIII (Severe)	84.0	August 28
3	56	7.5	Mexico, Michoacan	X (Extreme)	43.0	January 30
4	26	6.5	Costa Rica, Alajuela Province	VI (Strong)	33.0	April 14
5	15	7.0	Philippines, Luzon	IX (Violent)	33.0	March 17

• Note: At least 10 casualties

By magnitude

Rank	Magnitude	Death toll	Location	MMI	Depth (km)	Date
1	7.8	0	Japan, off the east coast of Hokkaido	VIII (Severe)	48.0	June 17
2	7.7	0	North Korea, offshore	V (Moderate)	575.0	September 29
3	7.6	56	Mexico, Michoacán	X (Extreme)	43.0	January 30
4	7.5	0	New Hebrides, Vanuatu	VIII (Severe)	26.0	December 28
5	7.4	2,199	China, Sichuan Province	X (Extreme)	33.0	February 6
6	7.2	0	Soviet Union, Kuril Islands, Russia	VIII (Severe)	27.0	February 28
6	7.2	0	New Hebrides, Vanuatu	VIII (Severe)	47.0	December 29
7	7.1	0	Soviet Union, Kuril Islands, Russia	VIII (Severe)	50.0	June 24
8	7.0	15	Philippines, Luzon	IX (Violent)	33.0	March 17
8	7.0	0	United Kingdom, east of the South Sandwich Islands	( )	33.0	October 6

• Note: At least 7.0 magnitude

Notable events

January

January

Strongest magnitude	7.5 Mw   Mexico
Deadliest	7.5 Mw   Mexico 56 deaths
Total fatalities	56
Number by magnitude
8.0–8.9	0
7.0–7.9	1
6.0–6.9	4
5.0–5.9	101
4.0–4.9	193

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
5 [1]	New Zealand, Manawatū-Whanganui, North Island	6.6	150.0	IV
6 [2]	New Hebrides, Vanuatu	6.1	36.0	VI
18 [3]	Australia, south of New Britain, Papua New Guinea	6.7	43.0	VI
22 [4]	Mexico, off the coast of Jalisco	6.1	33.0
30 [5] [6]	Mexico, Michoacán	7.6	43.0	X	Main article: 1973 Colima earthquake	56	390

February

February

Strongest magnitude	7.5 Mw   Soviet Union
Deadliest	7.4 Mw   China 2,199 deaths
Total fatalities	2,199
Number by magnitude
8.0–8.9	0
7.0–7.9	2
6.0–6.9	1
5.0–5.9	96
4.0–4.9	204

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
1 [7]	Argentina, Jujuy Province	6.3	229.0
6 [8] [9] [10]	China, Sichuan Province	7.4	33.0	X	Main article: 1973 Luhuo earthquake	2,199	2,743
21 [11] [12]	New Zealand, Hawke's Bay Region, North Island	5.1	38.0	VI	Moderate damage
21 [13] [14]	United States, southern California	5.8	10.0	VII	Main article: 1973 Point Mugu earthquake
24 [15] [16]	Iran, Fars province	5.2	27.0		Severe damage
28 [17] [18]	Soviet Union, Kuril Islands, Russia	7.5	27.0	VIII	Minor damage in Severo-Kurilsk.

March

March

Strongest magnitude	7.0 Mw   Philippines
Deadliest	7.0 Mw   Philippines 15 deaths
Total fatalities	15
Number by magnitude
8.0–8.9	0
7.0–7.9	1
6.0–6.9	4
5.0–5.9	105
4.0–4.9	208

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
4 [19]	Soviet Union, eastern Kamchatka, Russia	6.3	32.0
9 [20] [21]	Australia, New South Wales	5.1	20.0	VII	Property damage estimated $500,000 (1973 rate).
12 [22]	Soviet Union, Kuril Islands, Russia	6.3	54.0	V	Aftershock of February 28 event.
17 [23]	New Hebrides, Vanuatu	6.1	194.0
17 [24] [25]	Philippines, Luzon	7.4	33.0	VII	Main article: 1973 Ragay Gulf earthquake	15	64
18 [26]	Indonesia, Molucca Sea	6.6	33.0

April

April

Strongest magnitude	6.6 Mw   India
Deadliest	6.5 Mw   Costa Rica 26 deaths
Total fatalities	27
Number by magnitude
8.0–8.9	0
7.0–7.9	0
6.0–6.9	9
5.0–5.9	87
4.0–4.9	287

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
1 [27] [28]	France, Gulf of Tadjoura, Djibouti	6.2	31.0	VII	Some damage in Djibouti and 10 people injured.		10
3 [29]	Colombia, Quindío Department	6.3	158.0	III	Damage in Pereira, Armenia and Ibagué. [30]
7 [31]	India, Nicobar Islands	6.6	33.0
8 [32]	New Hebrides, Vanuatu	6.4	35.0	VI
12 [33]	Soviet Union, Kuril Islands, Russia	6.2	52.0		Aftershock of February 28 event.
14 [34] [35]	Costa Rica, Alajuela Province	6.5	33.0	VI	26 people were killed and 100 were injured. Damage costs were $200,000 (1973 rate).	26	100
17 [36]	Indonesia, Papua (province)	6.3	33.0	VI
24 [37] [38]	Colombia, off the west coast of	6.5	50.0	IV	1 person died and some damage was reported.	1
26 [39] [40]	United States, Hawaii (island)	6.4	36.9	VIII	11 people were injured and some property damage was reported. Costs were $5.75 million (1973 rate).		11

May

May

Strongest magnitude	6.2 Mw  Indian Ocean
Total fatalities	0
Number by magnitude
8.0–8.9	0
7.0–7.9	0
6.0–6.9	5
5.0–5.9	79
4.0–4.9	190

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
12 [41]	Papua New Guinea, offshore, 52 km north of Rabaul	6.1	20.0	VI
26 [42]	Alaska, offshore, 222 km west–southest of Adak	6.0	31.3	V
28 [43]	Indian Ocean, 262 km northeast of Port Mathurin	6.2	24.1
28 [44]	Alaska, offshore, 245 km east–southeast of Attu Station	6.0	25.0	I
28 [45]	India, offshore, 13 km west–southwest of Churāchāndpur	6.1	55.0	VI

June

June

Strongest magnitude	7.8 Mw   Japan
Total fatalities	0
Number by magnitude
8.0–8.9	0
7.0–7.9	2
6.0–6.9	4
5.0–5.9	155
4.0–4.9	269

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
5 [46]	New Hebrides, Vanuatu	6.2	24.0	IV
9 [47]	United Kingdom, Makira, Solomon Islands	6.5	70.0	V
17 [48] [49]	Japan, off the east coast of Hokkaido	7.8	48.0	VIII	Main article: 1973 Nemuro earthquake		27
17 [50]	Japan, off the east coast of Hokkaido	6.2	50.0		Aftershock.
24 [51] [52]	Soviet Union, Kuril Islands, Russia	7.3	50.0	VIII	One person was injured and some damage was reported. Aftershock of June 17 event.		1
26 [53] [54]	Soviet Union, Kuril Islands, Russia	6.9	50.0	IV	Aftershock.

July

July

Strongest magnitude	6.9 Mw   China
Total fatalities	0
Number by magnitude
8.0–8.9	0
7.0–7.9	0
6.0–6.9	7
5.0–5.9	153
4.0–4.9	234

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
1 [55]	United States, off the southeast coast of Alaska	6.7	33.0	V
3 [56]	Philippines, Samar	6.1	44.0	V	Foreshock.
3 [57]	Philippines, Samar	6.5	33.0	VI
5 [58]	Philippines, north of Samar	6.3	38.0	IV	Aftershock.
14 [59]	China, Xizang Province	6.6	33.0	VII
31 [60]	Chile, off the coast of Atacama Region	6.5	33.0	V
31 [61]	United Kingdom, Solomon Islands	6.2	30.0	VII

August

August

Strongest magnitude	7.1 Mw   Mexico
Deadliest	7.1 Mw   Mexico 600 deaths
Total fatalities	600
Number by magnitude
8.0–8.9	0
7.0–7.9	2
6.0–6.9	10
5.0–5.9	104
4.0–4.9	189

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
1 [62]	New Hebrides, Vanuatu	7.0	200.0	IV
5 [63]	Tonga	6.0	33.0
7 [64]	Chile, off the coast of Atacama Region	6.2	25.0	VI	Foreshock.
7 [65]	Chile, off the coast of Atacama Region	6.4	14.0	VII
13 [66]	Australia, East Sepik Province, Papua New Guinea	6.0	112.0	IV
16 [67]	China, Yunnan Province	6.0	33.0	VI
18 [68]	Philippines, west of Panay	6.3	14.0	VI
28 [69] [70]	Mexico, Oaxaca	7.1	84.0	VIII	Main article: 1973 Veracruz earthquake	600

September

September

Strongest magnitude	7.7 Mw   North Korea
Total fatalities	0
Number by magnitude
8.0–8.9	0
7.0–7.9	1
6.0–6.9	2
5.0–5.9	96
4.0–4.9	173

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
10 [71]	Soviet Union, off the coast of Primorsky Krai, Russia	6.7	532.0	II
20 [72]	Philippines, Bohol Sea	6.5	560.0	I
29 [73] [74]	North Korea, off the east coast of	7.7	575.0	V

October

October

Strongest magnitude	7.0 Mw   United Kingdom
Total fatalities	0
Number by magnitude
8.0–8.9	0
7.0–7.9	0
6.0–6.9	5
5.0–5.9	99
4.0–4.9	232

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
5 [75]	Chile, off the coast of Valparaíso Region	6.7	14.0	V	Damage in Valparaíso. [76]
5 [77] [78]	Chile, off the coast of Valparaíso Region	6.1	33.0	VII
6 [79]	Atlantic Ocean, east of the South Sandwich Islands	6.9	33.0
9 [80]	New Hebrides, Vanuatu	6.3	33.0	VI
25 [81]	Bolivia, Tarija Department	6.6	529.0

November

November

Strongest magnitude	6.4 Mw   United States
Deadliest	2 events caused 1 death each in Iran and Portugal
Total fatalities	2
Number by magnitude
8.0–8.9	0
7.0–7.9	0
6.0–6.9	6
5.0–5.9	128
4.0–4.9	188

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
4 [82] [83]	Greece, off the west coast	5.8	8.0	VIII	More than 1,400 homes damaged on Lefkada. [84]
6 [85]	United States, Andreanof Islands, Alaska	6.4	34.0	rowspan="2"| Doublet earthquake
6 [86]	United States, Andreanof Islands, Alaska	6.3	41.0	IV
8 [87]	Soviet Union, Kuril Islands, Russia	6.3	33.0	rowspan="2"| Doublet earthquake
11 [88]	Soviet Union, Kuril Islands, Russia	6.0	51.0
11 [89] [90]	Iran, Fars province	5.8	11.0	VII	One person was killed and major damage was reported.	1
19 [91]	Japan, off the east coast of Honshu	6.4	56.0	VI
23 [92] [93]	Portugal, Azores Islands	5.1	5.0	VIII	One person died and moderate damage.	1
29 [94] [95]	Greece, south of Crete	5.7	26.0	VIII	Some damage was reported.
30 [96]	New Hebrides, Vanuatu	6.3	124.0	IV

December

December

Strongest magnitude	7.5 Mw   New Hebrides, Vanuatu
Total fatalities	0
Number by magnitude
8.0–8.9	0
7.0–7.9	1
6.0–6.9	4
5.0–5.9	125
4.0–4.9	190

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
9 [97]	New Hebrides, Vanuatu	6.8	39.0	VII
19 [98]	Indonesia, Sumba	6.2	58.0	V
28 [99] [100]	New Hebrides, Vanuatu	7.5	26.0	VIII	Some damage was caused.
29 [101] [102]	New Hebrides, Vanuatu	6.9	47.0	VIII	Aftershock. Some damage was caused.
30 [103]	New Hebrides, Vanuatu	6.6	10.0	VIII	Aftershock.

References

1. ANSS. "M 6.2 – North Island of New Zealand 1973". Comprehensive Catalog. U.S. Geological Survey.
2. ANSS. "M 6.1 – Vanuatu 1973". Comprehensive Catalog. U.S. Geological Survey.
3. ANSS. "M 6.8 – New Britain region, Papua New Guinea 1973". Comprehensive Catalog. U.S. Geological Survey.
4. ANSS. "M 6.1 – offshore Jalisco, Mexico 1973". Comprehensive Catalog. U.S. Geological Survey.
5. ANSS. "M 7.5 – Michoacan, Mexico 1973". Comprehensive Catalog. U.S. Geological Survey.
6. "Significant Earthquake: MEXICO: S, FARIAS, TECOMAN". National Geophysical Data Center. January 30, 1973. Retrieved April 19, 2021.
7. ANSS. "M 6.1 – Jujuy, Argentina 1973". Comprehensive Catalog. U.S. Geological Survey.
8. ANSS. "M 7.4 – western Sichuan, China 1973". Comprehensive Catalog. U.S. Geological Survey.
9. "Significant Earthquake: CHINA: SICHUAN PROVINCE". National Geophysical Data Center. February 6, 1973. Retrieved April 20, 2021.
10. Utsu, T. "Search Page". Catalog of Damaging Earthquakes in the World (Through 2008). Retrieved April 20, 2021.
11. ANSS. "M 5.1 – North Island of New Zealand 1973". Comprehensive Catalog. U.S. Geological Survey.
12. "Significant Earthquake: NEW ZEALAND: HAWKES BAY". National Geophysical Data Center. February 21, 1973. Retrieved April 20, 2021.
13. ANSS. "M 5.3 – 22 km W of Malibu, CA 1973". Comprehensive Catalog. U.S. Geological Survey.
14. "Significant Earthquake: CALIFORNIA: OXNARD". National Geophysical Data Center. February 21, 1973. Retrieved April 20, 2021.
15. ANSS. "M 5.2 – southern Iran 1973". Comprehensive Catalog. U.S. Geological Survey.
16. "Significant Earthquake: IRAN: KHABIS, HENGAM ISLAND". National Geophysical Data Center. February 24, 1973. Retrieved April 20, 2021.
17. ANSS. "M 7.2 – Kuril Islands 1973". Comprehensive Catalog. U.S. Geological Survey.
18. "Significant Earthquake: RUSSIA: KURIL ISLANDS, HIROO, URAKAWA". National Geophysical Data Center. February 28, 1973. Retrieved April 20, 2021.
19. ANSS. "M 6.1 – near the east coast of the Kamchatka Peninsula, Russia 1973". Comprehensive Catalog. U.S. Geological Survey.
20. ANSS. "M 5.5 – near the southeast coast of Australia 1973". Comprehensive Catalog. U.S. Geological Survey.
21. "Significant Earthquake: AUSTRALIA: WOLLONGONG, SYDNEY". National Geophysical Data Center. March 9, 1973. Retrieved May 4, 2021.
22. ANSS. "M 6.1 – Kuril Islands 1973". Comprehensive Catalog. U.S. Geological Survey.
23. ANSS. "M 6.0 – Vanuatu 1973". Comprehensive Catalog. U.S. Geological Survey.
24. ANSS. "M 7.0 – Luzon, Philippines 1973". Comprehensive Catalog. U.S. Geological Survey.
25. "Significant Earthquake: PHILIPPINES: QUEZON CITY: CALAUG, LOPEZ, GUIAYANGAN". National Geophysical Data Center. March 17, 1973. Retrieved May 4, 2021.
26. ANSS. "M 6.5 – Molucca Sea 1973". Comprehensive Catalog. U.S. Geological Survey.
27. ANSS. "M 5.9 – Golfe de Tadjoura, Djibouti 1973". Comprehensive Catalog. U.S. Geological Survey.
28. International Seismological Centre. Bulletin of the ISC. Thatcham, United Kingdom.[Event  761026 ].
29. ANSS. "M 6.2 – Colombia 1973". Comprehensive Catalog. U.S. Geological Survey.
30. International Seismological Centre. Bulletin of the ISC. Thatcham, United Kingdom.[Event  761106 ].
31. ANSS. "M 6.6 – Nicobar Islands, India region 1973". Comprehensive Catalog. U.S. Geological Survey.
32. ANSS. "M 6.4 – Vanuatu 1973". Comprehensive Catalog. U.S. Geological Survey.
33. ANSS. "M 6.1 – Kuril Islands1973 usp00001ch". Comprehensive Catalog. U.S. Geological Survey.
34. ANSS. "M 6.5 – Costa Rica 1973". Comprehensive Catalog. U.S. Geological Survey.
35. "Significant Earthquake: COSTA RICA: TILARAN, ARENAL, RIO CHIQUITO". National Geophysical Data Center. April 14, 1973. Retrieved May 8, 2021.
36. ANSS. "M 6.4 – near the south coast of Papua, Indonesia 1973". Comprehensive Catalog. U.S. Geological Survey.
37. ANSS. "M 6.5 – south of Panama 1973". Comprehensive Catalog. U.S. Geological Survey.
38. "Significant Earthquake: COLOMBIA; SAN CRISTOBAL, VENEZUELA". National Geophysical Data Center. April 24, 1973. Retrieved May 8, 2021.
39. ANSS. "M 6.2 – Hawaii region, Hawaii 1973". Comprehensive Catalog. U.S. Geological Survey.
40. "Significant Earthquake: HAWAII: HILO". National Geophysical Data Center. April 26, 1973. Retrieved May 8, 2021.
41. ANSS. "M 5.9 – 52 km N of Rabaul, Papua New Guinea 1973". Comprehensive Catalog. U.S. Geological Survey.
42. ANSS. "M 5.8 – 222 km WSW of Adak, Alaska 1973". Comprehensive Catalog. U.S. Geological Survey.
43. ANSS. "M 5.9 – 262 km NE of Port Mathurin, Mauritius 1973". Comprehensive Catalog. U.S. Geological Survey.
44. ANSS. "M 5.7 – 245 km ESE of Attu Station, Alaska 1973". Comprehensive Catalog. U.S. Geological Survey.
45. ANSS. "M 5.9 – 13 km WSW of Chur?ch?ndpur, India 1973". Comprehensive Catalog. U.S. Geological Survey.
46. ANSS. "M 6.1 – Vanuatu usp0000215". Comprehensive Catalog. U.S. Geological Survey.
47. ANSS. "M 6.3 – Solomon Islands usp000023t". Comprehensive Catalog. U.S. Geological Survey.
48. ANSS. "M 7.7 – Hokkaido, Japan region 1973". Comprehensive Catalog. U.S. Geological Survey.
49. "Significant Earthquake: JAPAN: HOKKAIDO ISLAND". National Geophysical Data Center. June 17, 1973. Retrieved May 9, 2021.
50. ANSS. "M 6.0 – off the coast of Hokkaido, Japan 1973". Comprehensive Catalog. U.S. Geological Survey.
51. ANSS. "M 7.1 – Kuril Islands 1973". Comprehensive Catalog. U.S. Geological Survey.
52. "Significant Earthquake: RUSSIA: KURIL ISLANDS". National Geophysical Data Center. June 24, 1973. Retrieved May 9, 2021.
53. ANSS. "M 6.6 – Kuril Islands 1973". Comprehensive Catalog. U.S. Geological Survey.
54. International Seismological Centre. Bulletin of the ISC. Thatcham, United Kingdom.[Event  759922 ].
55. ANSS. "M 6.7 – off the coast of Southeastern Alaska 1973". Comprehensive Catalog. U.S. Geological Survey.
56. ANSS. "M 6.0 – Samar, Philippines 1973". Comprehensive Catalog. U.S. Geological Survey.
57. ANSS. "M 6.5 – Samar, Philippines 1973". Comprehensive Catalog. U.S. Geological Survey.
58. ANSS. "M 6.0 – Catanduanes, Philippines 1973". Comprehensive Catalog. U.S. Geological Survey.
59. ANSS. "M 6.9 – western Xizang 1973". Comprehensive Catalog. U.S. Geological Survey.
60. ANSS. "M 6.3 – offshore Atacama, Chile 1973". Comprehensive Catalog. U.S. Geological Survey.
61. ANSS. "6.0 – Solomon Islands 1973". Comprehensive Catalog. U.S. Geological Survey.
62. ANSS. "M 6.1 – Vanuatu 1973". Comprehensive Catalog. U.S. Geological Survey.
63. ANSS. "M 6.1 – Tonga 1973". Comprehensive Catalog. U.S. Geological Survey.
64. ANSS. "M 6.1 – offshore Atacama, Chile 1973". Comprehensive Catalog. U.S. Geological Survey.
65. ANSS. "M 6.3 – offshore Atacama, Chile 1973". Comprehensive Catalog. U.S. Geological Survey.
66. ANSS. "M 6.0 – near the north coast of New Guinea, Papua New Guinea 1973". Comprehensive Catalog. U.S. Geological Survey.
67. ANSS. "M 6.4 – Yunnan, China 1973". Comprehensive Catalog. U.S. Geological Survey.
68. ANSS. "M 6.1 – Panay, Philippines 1973". Comprehensive Catalog. U.S. Geological Survey.
69. ANSS. "M 6.8 – Oaxaca, Mexico 1973". Comprehensive Catalog. U.S. Geological Survey.
70. "Significant Earthquake: MEXICO: VERACRUZ, MEXICO CITY". National Geophysical Data Center. August 28, 1973. Retrieved May 12, 2021.
71. ANSS. "M 6.0 – China-Russia-North Korea border region 1973". Comprehensive Catalog. U.S. Geological Survey.
72. ANSS. "M 6.0 – Negros – Cebu region, Philippines 1973". Comprehensive Catalog. U.S. Geological Survey.
73. International Seismological Centre. Bulletin of the ISC. Thatcham, United Kingdom.[Event  756792 ].
74. ANSS. "M 6.5 – North Korea 1973". Comprehensive Catalog. U.S. Geological Survey.
75. ANSS. "M 6.5 – offshore Valparaíso, Chile 1973". Comprehensive Catalog. U.S. Geological Survey.
76. International Seismological Centre. Bulletin of the ISC. Thatcham, United Kingdom.[Event  755128 ].
77. ANSS. "M 6.7 – offshore Valparaíso, Chile 1973". Comprehensive Catalog. U.S. Geological Survey.
78. International Seismological Centre. Bulletin of the ISC. Thatcham, United Kingdom.[Event  755129 ].
79. ANSS. "M 7.0 – east of the South Sandwich Islands 1973". Comprehensive Catalog. U.S. Geological Survey.
80. ANSS. "M 6.4 – Vanuatu 1973". Comprehensive Catalog. U.S. Geological Survey.
81. ANSS. "M 6.1 – Tarija, Bolivia 1973". Comprehensive Catalog. U.S. Geological Survey.
82. ANSS. "M 5.8 – Greece 1973". Comprehensive Catalog. U.S. Geological Survey.
83. "Significant Earthquake: GREECE: LEUKAS ISLAND, PREVEZA, VONITSA". National Geophysical Data Center. November 4, 1973. Retrieved May 15, 2021.
84. International Seismological Centre. Bulletin of the ISC. Thatcham, United Kingdom.[Event  754132 ].
85. ANSS. "M 6.4 – Andreanof Islands, Aleutian Islands, Alaska 1973". Comprehensive Catalog. U.S. Geological Survey.
86. ANSS. "M 6.3 – Andreanof Islands, Aleutian Islands, Alaska 1973". Comprehensive Catalog. U.S. Geological Survey.
87. ANSS. "M 6.1 – Kuril Islands 1973". Comprehensive Catalog. U.S. Geological Survey.
88. ANSS. "M 6.0 – Kuril Islands 1973". Comprehensive Catalog. U.S. Geological Survey.
89. ANSS. "M 5.5 – central Iran 1973". Comprehensive Catalog. U.S. Geological Survey.
90. "Significant Earthquake: IRAN: QESHLAGH, DEH BID". National Geophysical Data Center. November 11, 1973. Retrieved May 15, 2021.
91. ANSS. "M 6.1 – near the east coast of Honshu, Japan 1973". Comprehensive Catalog. U.S. Geological Survey.
92. ANSS. "M 5.1 – Azores Islands, Portugal 1973". Comprehensive Catalog. U.S. Geological Survey.
93. "Significant Earthquake: AZORES: PICO, FAIAL, TERCEIRA". National Geophysical Data Center. November 23, 1973. Retrieved May 15, 2021.
94. ANSS. "M 5.7 – Crete, Greece 1973". Comprehensive Catalog. U.S. Geological Survey.
95. "Significant Earthquake: GREECE: CRETE, PALAEOCHORA, CHANIA". National Geophysical Data Center. November 29, 1973. Retrieved May 15, 2021.
96. ANSS. "M 6.0 – Vanuatu 1973". Comprehensive Catalog. U.S. Geological Survey.
97. ANSS. "M 6.8 – Vanuatu 1973". Comprehensive Catalog. U.S. Geological Survey.
98. ANSS. "M 6.0 – Sumba region, Indonesia 1973". Comprehensive Catalog. U.S. Geological Survey.
99. ANSS. "M 7.5 – Vanuatu 1973". Comprehensive Catalog. U.S. Geological Survey.
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